Hitachi CP 7 EX Service Manual

Page 1

@HITACHI

SERVICE MANUAL

Semiconductors :

Power Supply :

Power Consumption :
Power Output :

Tape :

Track System :
Tape Speed :

TK No. 1883E

CP-7EX

CONTENTS

Block diagram ....................
Description of new circuit
Disassembly

Description of new mechanism. 7
Adjustment ................ 11
inspection of mechanism. 12
Lubrication 12
Schematic Iagram. 13
Circuit board diagram. 15

Exploded view ......... .
Replacement parts list 19

KEY TO ILLUSTRATIONS

@ HEADPHONES SOCKETS (A, B)
® VOLUME CONTROL

TAPE SELECTOR

@ PLAY BUTTON

G) REVERSE BUTTON

@ FAST FORWARD/REWIND BUTTON
© STOP BUTTON

@ DC IN 3v SOCKET

(5) OPERATION INDICATOR

SPECIFICATIONS
le : 2 Frequency Response : Normal : 40-12000 Hz
Transistors : 9 Metal : 40-16r000 Hz
Diodes : 3 Signal to Noise Ratio: 50dB
LED : 1 Wow and Flutter : 0.2% (WRMS)
DC : 3V llEC RG(AA cell)X2 or Crosstalk : Between tracks : 70 dB
equivalent] Between channels : 50 dB

IEC R14(C~ call)><2 or
equivalenti..Use earring case
AC : Use optional AC adaptoriBV)
145mA (with no signal)
50mW (25mW+25mW)M.THD10%
Cassette tape
4 track 2 channel stereo
4.7SCm/s

Output Load Impedance :

Distortion
Motor :
Fast Forwa

Dimensions :

Weight :

Headphone : 33 ohms (8-100
ohms suitable)

: 3%

Electronically controlled DC motor

135 sec. (using C~60)

108(W)X77(H)X23.5(D)mrn

2909 (with batteries)

rd or Rewind Time:

SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT

STEREO CASSETTE PLAYER

February 1983

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